package com.feng.boot.api.singleton;

import sun.security.jca.GetInstance;

/**
 * @author Lee
 */
public class SingleTon4 {

    private static SingleTon4 INSTANCE;

    private SingleTon4(){}

    public static SingleTon4 getInstance(){
        if (INSTANCE == null) {
            INSTANCE = new SingleTon4();
        }
        return INSTANCE;
    }
}
